It would be a room with computer-controlled tools that could mold metal into any shape, mold plastic into any shape, print circuit boards, scan 3D shapes, melt down metal and roll metal to any stock steel section. The result is that you could make any electronic or mechanical device. Inputs are scrap metal, plastic and silicon - out come bicycles, saucepans, tractors, medical equipment, mobile phones, laptop computers, Internet nodes, solar turbines, sculptures, robots and whatever else you can imagine. And one of the things it would be able to make would be another RepLab, as all the fabrication machines would use open-source designs. This would allow the labs to multiply like rabbits.

This promise has been around since the Star Trek replicator, but to date, only partial or non-open source implementations are available - such as OpenDesk, WikiHouse, (designs open source and commercial) and the MIT FabLab (tools not open source and designs non-commercial). OSE aims to bridge this gap no later than by 2028.